METHOD TO MANUFACTURE NON-AUTOCLAVE CONCRETE FOAM PRODUCTS Russian patent published in 2014 - IPC B28B1/50 C04B38/00 C04B40/00 

FIELD: construction.

SUBSTANCE: method to produce construction products from foam concrete includes separate preparation of foam and mortar mixture, their mixing or single-stage preparation of foam mass with subsequent laying into moulds, soaking, removal of formwork, steaming and removal of the product mould. At the same time after laying the foam concrete mass onto full volume into a stiff perforated mould it is closed with a cover, creating a closed volume, and connect to the AC network via plate electrodes arranged on two opposite sides of the mould. The mass is exposed to electric heating with current of industrial frequency 50 Hz with voltage of 50-80 V for 15-20 min. After electric treatment the product is maintained for 40-60 min to remove temperature stress and gain structural strength. Then formwork is removed. After this the product heated to 60°C on the tray arrives for further thermal treatment.

EFFECT: reduced technological process of production with parallel increase of strength and thermal properties of an item.

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